IPhone 4s

Released on October 14, 2011, the iPhone 4S retains the body design of the iPhone 4, although introduced a number of hardware upgrades. Apple's fifth iPhone is the first to be available on the Sprint Network. The last iPhone to be released under the supervision of Steve Jobs.

Tech Specs

Release: October 14, 2011

CPU: Dual Core Apple A5

Memory: 512 MB DRAM

Operating System: iOS

Bluetooth:4.0 (low Profile ) technology

Display: 3.5-inch 960x640 resolution Retina Display

Camera: 8.0MP 1080P HD rear facing, VGA 480P front facing,LED Flash

Storage: 16GB, 32GB, 64GB

Standby time: UP to 200 hours

Siri

One of the most significant new features introduced with iPhone 4S is Siri, a voice-operated assistant that works only with the iPhone 4S--Siri is not compatible with older iOS devices.